| Dorsetodon | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | † Dryolestida |
| Family: | † Paurodontidae |
| Genus: | † Dorsetodon Ensom & Sigogneau-Russell, 1998 |
| Species: | †D. haysomi |
| Binomial name | |
| †Dorsetodon haysomi Ensom & Sigogneau-Russell, 1998 | |
Dorsetodon is an extinct genus of mammal from the Early Cretaceous (Berriasian) Purbeck Group of Britain. It is represented by isolated lower molars. [1]
Gerhardodon is an extinct genus of mammal from the Lower Cretaceous of southern England. It was a member of the also extinct order of Multituberculata, and lived with such dinosaurs as Iguanodon. It lies within the suborder "Plagiaulacida" and family Pinheirodontidae.
Albionbaatar is an extinct mammal from the Lower Cretaceous Lulworth Formation of England. It was a member of the also extinct order Multituberculata and shared the world with the much larger dinosaurs. It is in the suborder "Plagiaulacida", family Albionbaataridae. The genus Albionbaatar was named by Kielan-Jaworowska Z. and Ensom P.C. in 1994 based on a single species.
Gondwanatherium is a genus of stem-mammal from the extinct suborder Gondwanatheria that lived in Patagonia, South America during the "Age of Dinosaurs", specifically during the Late Cretaceous.
Didelphodon is a genus of stagodont metatherians from the Late Cretaceous of North America.
Echinodon is a genus of heterodontosaurid dinosaur that lived during the earliest Cretaceous of southern England and possibly western France in the Berriasian epoch. The first specimens were jaw bones named Echinodon becklesii by Sir Richard Owen in 1861, and since their original description only additional teeth have been discovered. The specific name honours collector Samuel Beckles who discovered the material of Echinodon and many other taxa from across England, while the genus name translates as "prickly tooth" in reference to the dental anatomy of the taxon.
The Purbeck Group is an Upper Jurassic to Lower Cretaceous lithostratigraphic group in south-east England. The name is derived from the district known as the Isle of Purbeck in Dorset where the strata are exposed in the cliffs west of Swanage.
The family Peramuridae is a family of mammals that lived in the Late Jurassic and Early Cretaceous.
Vincelestes is an extinct genus of actively mobile mammal, that lived in what would be South America during the Early Cretaceous from 130—112 mya, existing for approximately 18 million years.
Athrodon is a genus of extinct pycnodontid that lived in shallow seas in what is now England and France from the Late Jurassic until the genus extinction during the start of the late Cretaceous. The various species are very similar in splenial bone and tooth morphology to Mesodon. Otherwise, no articulated or complete specimen is known: all fossils specimens are bone fragments and disarticulated teeth.
Amphidon is an extinct genus of Late Jurassic mammal from the Morrison Formation. It is present in stratigraphic zone 5. The only species in the genus is Amphidon aequicrurius, found by Simpson in 1925.
Trioracodon is an extinct genus of Late Jurassic to Early Cretaceous eutriconodont mammal found in North America and the British Isles. It was named in 1928
Tinodon is an extinct genus of mammal alive 155-140.2 million years ago (Oxfordian-Berriasian) which has been found in the Morrison Formation, the Alcobaça Formation (Portugal) and the Lulworth Formation (England). It is of uncertain affinities, being most recently recovered as closer to therians than eutriconodonts but less so than allotherians. Two species are known: T. bellus and T. micron.
Laolestes is an extinct genus of dryolestid mammal. Remains are known from the Morrison Formation, in stratigraphic zones 5 and 6., the Late Jurassic of Portugal, and Early Cretaceous Wadhurst Clay of UK.
Donodon is an extinct genus of mammal from the Early Cretaceous (?Berriasian) Ksar Metlili Formation of Talssint, Morocco. It differs from dryolestids in having upper molars that are not compressed mesiodistally. Recent studies suggest that it was closely related to various South American dryolestoids in the clade Meridiolestida. Specific similarities to Mesungulatum, a herbivorous mesungulatid, are noted.
Aegialodontia is a clade of extinct early mammals, close to the origin of Boreosphenida. The clade includes some of the oldest known tribosphenic taxa, until the discovery of Tribactonodon from the Berriasian Durlston Formation in 2001, Aegialodon from the Valanginian Wadhurst Clay Formation was the oldest taxon with the tooth form. The Aptian to Albian taxon Kielantherium from Mongolia, formerly a synonym of Aegialodon, is also within the group, sister to Aegialodon within Aegialodontidae.
Batrachosauroididae is an extinct family of prehistoric salamanders with holarctic distribution. They were paedomorphic and presumably aquatic. They are possibly the sister taxon of Proteidae, an extant family of aquatic salamanders. They are definitively known from the Late Cretaceous to Miocene of North America and Europe. Remains from the earliest Cretaceous (Berriasian) Lulworth Formation of England have tenatively been attributed to this family.
Spalacotherium is a genus of extinct mammal from the Early Cretaceous of Europe. The type species Spalacotherium tricuspidens was originally named by Richard Owen in 1854, and its material includes maxillary and dentary fragments and many teeth from the Berriasian Lulworth Formation of southern England. Referred species include S. taylori, S. evansae and S. hookeri also from the Lulworth deposits, and S. henkeli from Barremian deposits of Galve, Spain. The Lulworth taxon Peralestes longirostris, named by Owen in 1871, is a junior synonym of the type species S. tricuspidens. Spalacotherium is the namesake taxon of the family Spalacotheriidae, which is an extinct clade within Trechnotheria that may be closely related to the Gondwanan clade Meridiolestida, or united with the family Zhangheotheriidae to form Symmetrodonta.S. evansae is also from the Berriasian aged Angeac-Charente bonebed in western France.
Chunnelodon is a genus of extinct mammal from the Early Cretaceous of Southern England. The type and only species is Chunnelodon alopekodes, represented by two lower molars from the Sunnydown Farm locality of the Lulworth Formation of Dorset. The taxon was described by Paul Ensom and Denise Sigogneau-Russell in 1998, who gave the species name from the translation of the Ancient Greek phrase "sly as a fox", with the generic name honouring the British-French collaboration and the newly inaugurated Channel Tunnel. Chunnelodon is diagnosed by multiple features of the dental anatomy including slightly asymmetrical but aligned roots, sharp cusps, a tall protoconid and metaconid, a small paraconid, and a reduced talonid. While it was only assigned to Cladotheria indeterminate, Chunnelodon was likely closely related to Dryolestoidea, although outside the clade.
Kouriogenys is a genus of extinct mammal from the Early Cretaceous of southern England. The type and only species was originally described as Spalacotherium minus by Richard Owen in 1871 for a dentary with teeth from the Berriasian Lulworth Formation, although it was given its own genus in 2012 by Brian Davis. The genus name is taken from the Ancient Greek "youthful" and "jaw" in reference to the replacement method of the premolars. Kouriogenys is closely related to coexisting genera Peramus and Peramuroides, and along with other genera these make up the family Peramuridae, a group of extinct zatherians.
Peramuroides is a genus of extinct mammal from the Early Cretaceous of southern England. The type and only species is Peramuroides tenuiscus, described in 2012 by Brian Davis for dentary fragments and teeth from the Berriasian Lulworth Formation. The genus name references closely related Peramus, while the species name is based on the Latin word for "thin". Peramuroides is closely related to coexisting genera Peramus and Kouriogenys, and along with other genera these make up the family Peramuridae, a group of extinct zatherians.
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